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Network slow between 2 wired computers.

I

imaheadcase

Diamond Member
I have the following on network. For some reason I can't top anything past 23.1MB/s.

Intel PWLA8391GT 10/ 100/ 1000Mbps PCI PRO/1000 GT for each PC
WIndows Home server on 1 PC (windows Server 2003)
Windows 7 64bit on other.
Each adapter settings are the same, connected at 1Gbps. Jumbo frames enabled or disabled is the same speed.
TRENDnet TEG-S80G 10/100/1000Mbps GREENnet Switch

Brother has same switch, different network config and gets 50-60Mbps vs my 23.1MB/s.

Anyone have a clue what is up? My computers are plenty beefy in specs. Perhaps the hardrives? I know server has 5 different sata drives in it. But i only have one sata drive.

The odd thing is, he has WHS on network to, and different types of drives, yet i'm still getting slow speeds.

Please someone make me hit my forehead and go "doh! should of thought of that!". 😛
 
Are there any non-gigabit devices connected to the switch? Seems unlikely to be the culprit since that's a quality unit, but stranger things have happened.

Also are cables all cat5e/cat6 gigabit rated? And are they all straight through? Are any of them absurdly long/short?
 
Everything is gigabit throughout. Cables are less than 25 feet each. All cat5e cables.

I have a patch panel located near the switch that everything hooks up to, then goes to the switch/router/cable modem. I have no way to bypass that for straight connections to test to see if that is the problem though..But i doubt it since they are all auto-neg at 1Gbps.
 
imaheadcase said:
Everything is gigabit throughout. Cables are less than 25 feet each. All cat5e cables.

I have a patch panel located near the switch that everything hooks up to, then goes to the switch/router/cable modem. I have no way to bypass that for straight connections to test to see if that is the problem though..But i doubt it since they are all auto-neg at 1Gbps.
Click to expand...

1st place to look is the cabling as that's the number 1 cause of all performance problems. Auto negotiating to 1000/full is meaningless as far as the cabling is concerned. Test without the patch panel in the mix, especially if it wasn't professionally installed by competent installers.
 
It was pro installed, my brother did it on his house..exact same panel he has in his and works fine. I'll have him look at it again though.
 
Patchpanels can have manufacturing defects, too. Especially if they're made by Leviton.

We've had some bad ones by Gruber, too.
 
Well you could bypass the patch panel by wiring directly from PC to PC and just seeing what you get then. Could indicate if one of the NICs or a cable is a problem at least. If they work fine though it may be tricky to diagnose between the panel and the switch, depending just where everything is located.
 
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